13231132308 has 18 divisors (see below), whose sum is σ = 33445362314. Its totient is φ = 4410377424.

The previous prime is 13231132307. The next prime is 13231132309. The reversal of 13231132308 is 80323113231.

13231132308 is a `hidden beast` number, since 1 + 323 + 1 + 1 + 32 + 308 = 666.

It is an interprime number because it is at equal distance from previous prime (13231132307) and next prime (13231132309).

It can be written as a sum of positive squares in only one way, i.e., 8287917444 + 4943214864 = 91038^2 + 70308^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231132307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183765691 + ... + 183765762.

Almost surely, 2^13231132308 is an apocalyptic number.

13231132308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13231132308 is an abundant number, since it is smaller than the sum of its proper divisors (20214230006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13231132308 is a wasteful number, since it uses less digits than its factorization.

13231132308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367531463 (or 367531458 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 13231132308 its reverse (80323113231), we get a palindrome (93554245539).

The spelling of 13231132308 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-two thousand, three hundred eight".